Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5c0c9bebd53a90a886b07f020b03c7f64e61c683b307651876e1718cadea37a' 
  AND token = 'h2fZuJ2NHqYEcJFgfZ68mnatSd1/UDCVvy6fD7stHlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}